MTL - Demon Slayer: The Beginning of the Game Opens the Way of Reward for Diligence - Chapter 29

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

Kurokawa Risa is an ordinary office worker, who has practiced lots of cooking while living alone. One day, she wakes up in another world, with a concerned little spirit hovering over her! She has apparently been transported to a magical, spirit-filled realm by the will of the goddess, and there is no known way for her to go back. She is taken in by a wealthy couple, and they and her new spirit helper treat her with nothing but kindness. There is one problem, however–the food in this magical world is gross! Risa insists on helping the household cooking staff prepare a traditional meal from her world, and it is a big hit with her hosts. Soon Risa knows what she should do in this new world; she should open a cafe and treat everyone to delicious food!

Romance Carnival 1st Prize. BEWARE THE FURY OF A PATIENT WOMAN. Rosalind Lux died after learning of her husband and sister’s betrayal. And just as she thought she finally found peace, she woke up forty years before her death. With memories from her past life intact, Rosalind vowed revenge. Her plans quickly brought her into the arms of a Duke whose enticing gaze contained mysteries that threatened not just her plans but her heart and body. …. BEWARE THE LOVE OF A CURSED MAN. Punished by the Goddess for his greed, Lucas Benjamen Rothley had been guarding the North for as long as he could remember. For hundreds of years, no woman has ever stirred his heart. That was until the fearsome Rosalind Lux stumbled into his life. Soon, he realized Rosalind wasn’t quite the damsel that she liked everyone to believe. She is hiding a secret so dark it could either end his curse or throw his life amiss.